dart2js: Bugfix for when 'await' occurs in an initializer list.

tests/language/language_dart2js.status

Index: tests/language/language_dart2js.status
diff --git a/tests/language/language_dart2js.status b/tests/language/language_dart2js.status
index d90a79762d3f41ce38f547b1eacc275662214619..a5c7052ac67fdb08b1a7fa736c4c8e2541d051cf 100644
--- a/tests/language/language_dart2js.status
+++ b/tests/language/language_dart2js.status
@@ -271,7 +271,6 @@ async_star_regression_fisk_test: Crash # (fisk()async*{res.ad...  cannot handle
 async_star_stream_take_test: Crash # (Stream makeStream(i...  cannot handle sync*/async* functions
 async_star_take_reyield_test: Crash # (fivePartialSums(Str...  cannot handle sync*/async* functions
 async_star_test: Crash # (f()async*{}): cannot handle sync*/async* functions
-async_this_bound_test: RuntimeError # Cannot read property 'set$f' of undefined
 asyncstar_concat_test: Crash # (concat(a,b)async*{yield* a;yield* b;}): cannot handle sync*/async* functions
 asyncstar_throw_in_catch_test: Crash # (foo4(Tracer tracer)...  cannot handle sync*/async* functions
 asyncstar_yield_test: Crash # (Stream<int> foo4()a...  cannot handle sync*/async* functions
@@ -279,10 +278,7 @@ asyncstar_yieldstar_test: Crash # (foo2(Stream subStream)async*{yield* subStream
 await_for_cancel_test: Crash # (await for(var x in controller.stream){for(int j=0;j<10;j++ ){if(j==5)continue outer;}}): await for
 await_for_test: Crash # (await for(var x in infiniteStream()){i++ ;if(i>10)break;t4.record(x);}): await for
 await_for_use_local_test: Crash # (await for(var v in s){accum+= v;}): await for
-await_future_test: RuntimeError # Cannot read property '_await_future_test$_box_0' of undefined
-await_postfix_expr_test: RuntimeError # Please triage this failure.
 await_regression_test: RuntimeError # "Obelix".then$1 is not a function
-await_test: RuntimeError # Cannot read property '$add' of undefined
 cha_deopt1_test: Crash # (d.make_u()): deferred access is not implemented
 cha_deopt2_test: Crash # (d.make_u()): deferred access is not implemented
 cha_deopt3_test: Crash # (d.make_u()): deferred access is not implemented